Abstract: It is an object of the present invention to provide a diamine derivative, a process for producing the same, and a plant disease control agent containing the above-described compound as an active ingredient. According to the present invention, a diamine derivative represented by Formula (1), a process for producing the same, and a plant disease control agent containing the above-described compound as an active ingredient are provided.

Abstract: A process, as a substitute for hydrolysis, for preparing a nitroguanidine derivative represented by the following formula (2): ##STR1## wherein A represents a substituted or unsubstituted aromatic or non-aromatic hydrocarbon ring, a substituted or unsubstituted aromatic or non-aromatic heterocycle, a hydrogen atom or a substituted or unsubstituted alkyl, alkenyl or alkynyl group; and R.sub.2 represents a hydrogen atom, a substituted or unsubstituted C.sub.1-6 alkyl, alkenyl or alkynyl group, which comprises reacting a compound represented by the following formula (1): ##STR2## wherein R.sub.1 represents a substituted or unsubstituted, linear or cyclic C.sub.1-10 alkyl group and A and R.sub.2 have the same meanings as defined above, with ammonia, a primary amine or a secondary amine, or a salt thereof.

Abstract: A tetrahydrofuran-compound is disclosed herein which is represented by the formula (1) ##STR1## wherein each of X.sub.1 and X.sub.2 is a hydrogen atom or a methyl group, Y is a hydrogen atom or a carbonyl group substituted by a lower alkyl group (Y') having 1 to 4 carbon atoms, i.e., an acyl group (--COY'), andn is 2 or 3,and an insecticide containing the tetrahydrofuran-compound as an effective component.

Abstract: The present invention relates to novel (tetrahydro-3-furanyl)methylamino derivatives of the following formula (1): ##STR1## wherein the variables are defined in the specification, which are useful as insecticides.

Abstract: The present invention relates to novel (tetrahydro-3-furanyl)methylamino derivatives of the following formula (1): ##STR1## wherein the variables are defined in the specification, which are useful as insecticides.

Abstract: The present invention relates to novel N-vinylimidazolidine derivatives of the following formula (1), a process for producing them, an insecticide containing the derivatives as an effective ingredient, and novelintermediates. The derivatives (1) are useful as agricultural chemicals (particularly, as insecticides) in the fields of agriculture, and the intermediates are useful in various industrial fields, especially as intermediates for agricultural chemicals. ##STR1## where R.sup.1, R.sup.2, Z are as defined in the specification.

Abstract: Novel dialkoxymethylimidazolidine derivatives of the formula (1) ##STR1## are described. Also, a preparation process of the derivatives and insecticidal compositions comprising the same are set forth.

Abstract: Herein disclosed are novel imidazolidine derivatives of the formula (I) and intermediates of the formula (II) ##STR1## wherein each R represents a hydrogen atom, an alkyl group having from 1 to 6 carbon atoms, a halogen atom, an alkoxy group having from 1 to 6 carbon atoms, a methylenedioxy group, an alkylthio group having from 1 to 4 carbon atoms, a haloalkyl group having from 1 to 2 carbon atoms, a haloalkoxy group having from 1 to 4 carbon atoms, an alkylcarbonyl group having from 1 to 6 carbon atoms, an alkoxycarbonyl.group having from 1 to 6 carbon atoms, a hydroxy group, a cyano group, a nitro group, an alkylamino group having from 1 to 8 carbon atoms, a phenyl group, a phenoxy group, a benzyl group or a halopyridylmethyloxy group, and n is an integer of from 1 to 3, ##STR2## wherein R and n have, respectively, the same meanings as defined above. Processes for preparing the compounds of the formulas (I) and (II) are also described.

Abstract: Novel dialkoxymethylimidazolidine derivatives of the formula (1) ##STR1## are described. Also, a preparation process of the derivatives and insecticidal compositions comprising the same are set forth.